EP 0222999 A2 19870527 - Digital-to-Analog converter with output sampler.
Title (en)
Digital-to-Analog converter with output sampler.
Title (de)
Digital/Analog-Wandler mit Ausgangsabtaster.
Title (fr)
Convertisseur numérique-analogique à échantillonneur de sortie.
Publication
Application
Priority
US 79988785 A 19851120
Abstract (en)
A high speed monolithic current switching digital-to-analog converter (DAC) having a sampled output is provided. The DAC (10) includes an output sampling circuit (9) which is an on/off switch rather than a sample and hold circuit. Elimination of a holding capacitor results in faster switching and less error. The sampler (9) is a differential, triple balanced architecture which steers the DAC's differential outputs alternately to a load resistor via a balancing transformer (11) and to ground. The sampler (9) includes a three-stage, AC coupled GaAs pre-amp (15) which provides a complementary clock to drive the sampler.
IPC 1-7
IPC 8 full level
H03K 7/02 (2006.01); H03K 5/02 (2006.01); H03K 17/687 (2006.01); H03K 17/693 (2006.01); H03K 19/0185 (2006.01); H03M 1/00 (2006.01); H03M 1/06 (2006.01); H03M 1/08 (2006.01); H03M 1/74 (2006.01)
CPC (source: EP US)
H03K 5/023 (2013.01 - EP US); H03K 17/6871 (2013.01 - EP US); H03K 17/693 (2013.01 - EP US); H03K 19/018564 (2013.01 - EP US); H03M 1/0678 (2013.01 - EP US); H03M 1/0872 (2013.01 - EP US); H03M 1/745 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 4639619 A 19870127; CA 1256215 A 19890620; DE 3688256 D1 19930513; DE 3688256 T2 19931007; EP 0222999 A2 19870527; EP 0222999 A3 19891213; EP 0393728 A2 19901024; EP 0393728 A3 19910320; EP 0393728 B1 19930407; JP S62128620 A 19870610
DOCDB simple family (application)
US 79988785 A 19851120; CA 521856 A 19861030; DE 3688256 T 19860909; EP 86112443 A 19860909; EP 90110749 A 19860909; JP 27777186 A 19861120